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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Thyroid conditions may make getting pregnant impossible.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.